Home / 3,158.02-4,358.40-1,831.72

Finding the Fourth Proportional to 3,158.02, 4,358.40 and 1,831.72

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Solution

The fourth proportional to 3,158.02, 4,358.40 and 1,831.72 is: 2,527.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,158.02 : 4,358.40 = 1,831.72 : x
  2. Step 2: Convert to fraction form
    3,158.02/4,358.40 = 1,831.72/x
  3. Step 3: Cross multiply
    3,158.02x = 4,358.40 × 1,831.72
  4. Step 4: Simplify right side
    3,158.02x = 7,983,368.45
  5. Step 5: Solve for x
    x = 7,983,368.45/3,158.02
  6. Step 6: Final answer
    x = 2,527.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.